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Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C
Chen, Hao; He, Shan; Cao, Xingzhong; Zhang, Shitong; Xu, Ming; Pu, Min; Su, Dangsheng; Wei, Min; Evans, David G.; Duan, Xue; He, S; Wei, M (reprint author), Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China.; Su, DS (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-07-12
发表期刊CHEMISTRY OF MATERIALS
ISSN0897-4756
卷号28期号:13页码:4751-4761
摘要For catalytic processes involving multiple reaction pathways such as the ethanol steam reforming (ESR), tailoring the active site structure of catalysts to achieve the desired catalytic selectivity is of vital importance and remains a challenge. Here, we report a heterogeneous Ru-Ni catalyst by anchoring Ru clusters onto the defect sites of Ni nanoparticles. The resulting strained Ru-Ni interface shows a high activity toward the C-C bond cleavage that is essentially required for hydrogen production via ESR. The C-O bond rupture in the side reaction (methanation) is significantly inhibited. This results in an extremely high H2 yield of 4.2 molH2/molEtOH at 350 degrees C, superior to the previously reported ESR catalysts working at medium-low temperature (300-500 degrees C). An experimental-computational combination study verifies that the conversion of Ni surface defects to the Ru-Ni interface plays a decisive role in the remarkably improved H2 yield. This work demonstrates an effective strategy to largely enhance the bond-breaking selectivity via tuning the active site structure at the catalyst surface/interface.
部门归属[chen, hao ; he, shan ; zhang, shitong ; xu, ming ; pu, min ; wei, min ; evans, david g. ; duan, xue] beijing univ chem technol, state key lab chem resource engn, beijing 100029, peoples r china ; [cao, xingzhong] chinese acad sci, inst high energy phys, beijing 100049, peoples r china ; [su, dangsheng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
学科领域Chemistry ; Materials Science
资助者973 Program [2014CB932104]; National Natural Science Foundation of China
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75794
专题中国科学院金属研究所
通讯作者He, S; Wei, M (reprint author), Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China.; Su, DS (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式
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Chen, Hao,He, Shan,Cao, Xingzhong,et al. Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C[J]. CHEMISTRY OF MATERIALS,2016,28(13):4751-4761.
APA Chen, Hao.,He, Shan.,Cao, Xingzhong.,Zhang, Shitong.,Xu, Ming.,...&Su, DS .(2016).Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C.CHEMISTRY OF MATERIALS,28(13),4751-4761.
MLA Chen, Hao,et al."Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C".CHEMISTRY OF MATERIALS 28.13(2016):4751-4761.
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